Continuous wire-drawing machinery



M. HOWARTH.

CONTINUOUS WIRE DRAWING MACHINERY.

APPLICATION FILED JULY14 1920.

1 3%,182D Patentedfiept. 6 -1921,

2 SHEE1S-SHEET l.

F/ a. I.

' M. HOWARTH.

CONTINUOUS WIRE DRAWING MACHINERY.

APPLICA'HON FILED JULYI4, 1920 1,39UE13Q PatentedSept. 6,1921.

2 SHEEIS-SHEEI till :: a nowmn, or PADGATE, WRINGTON, ENG.

@ONTIN'UOUS WIRE-DRAWING MACHY.

- application filed Jul It,

To all whom it may concern Be it known that I, MARK HowAnTH, a subject of the King of England, and re siding a't Padgate, Warrington, in the county of Lancaster, England, have invented Improvements in or Connected with Continuous Wire-Drawing Machinery, of which the following is a specification.

This invention has reference to wire or rod drawing machines, and more particu-' larly those known as continuous machines, in which the wire or rod is passed in a continuous manner through a plurality of dies or draw plates of successively smaller size, and is worked through the draw plates by a plurality of rotary drawing blocks, namely, one to each drawing plate or die; and the primary object and efiect of this invention is to provide means by which heavy drawing can be accomplished continuously, and consequently a greater output per machine of given size and number of plates can be produced.

In connection with each of the blocks of. the machine there is employed a rotary feeding oil arrangement or mechanism through which the wire from a block is passed on its way to the next drawing plate and block; and this feeding arrangement or mechanism is frictionally or equivalently driven by the block, and hence it is adapted to revolve with it, but is free to slip thereon, and by this mechanism the wire is fed off the block.

From it the wire is passed over an overhead pulley above the block,-preferably' centrally placedand thence past the next bench pulley to the next drawing plate and block, which has a similar wapping 0d mechanism; whence it is again passed over an overhead and a bench pulley to the next draw plate and block, which may be the final block, in the case of a three holding machine.

The invention is illustrated in the annexed drawings, in which Figure 1 is a general view illustrating the manner of continuous drawing, and the machinery therefor, according to this invention; and Figs. 2 and 3 are an elevation partly in section, and a plan, respectively showing the frictional driving parts for the feeding off of the wire.

Referring to the drawings, and the general arrangement shown in Fig. 1, 0 is the wire; 1 represents the bed or bench of the wire drawing machine and its dies and Specification of letters Patent.

Patented st t. e, rear. 192a. Serial in. 396,053.

blocks; 2 are the die plates throughwhich the wire is drawn; and 3 the brackets or supports in which they are fixed.

4, 5 and 6 are the several rotary blocks, which are mounted on spindles as usual, supported on the bench 1, and by which they will be revolved. 7 are pulleys over which the wire from the respective blocks 4 and 5 is carried on its way from one block to the other, these pulleys being supported in carriers 8 which slide up and down in guides 9, supported inthe frames 10 fixed on the bed 1, and normally pressed upward by a suspension spring 11 fixed to a hook at the top of the frame 10.

On the top of each'of the blocks 4 and 5 there is fitted a ring 13, which is free to such friction being produced by the means hereinafter described in connection with the details shown in Figs. 2 and 3. Namely, fixed onthe to'p'of each of the block bodies 4 and 5, by bolts, is a casting 16 having at its upper part a ball bearing race ring 17,

and upon balls 18 in this ring, is a ring or disk 19 having four arms 20., which extend out radially, and are secured to the annular ring 13. Then, in the upper face of the ring 19 is a'ball race in which the balls 21 run, and upon which is fitted a disk plate 22, which is fastened on the upper end of the casting 16, by screws 23, and

has on its end under side near its edge, a'

race in which the balls 21 run.

In the plate 22 there is an annular groove in which is fitted a brass or other friction ring 24, which as adapted to be pressed down wing screw bolts 25, of which say there are two or more; and by screwing these bolts 25 down on to the surface of the ring 19, friction between the edge of the block, and the ring 13 through the parts carried by the lat.- ter can bEprodficed, and adjusted to the degree required.

In action, if the block 4: is running, and the studs 25 are left loose or screwed back, the casting 16 and the-disk 22 will revolve with the block to which they are secured, but the ring 19 and the ring 13 will be prac-I tically free; but if the stud 25 are on to the upper face of the ring 19 by the which is then stopped. The end of the wire is then taken out of the vise and passed through the eye 14 in the annular ring 13, and then is carried up over the first pulley 7, and thence under the small bench pulley 27, and through the next draw plate 2 of the next block 5.

The wire is drawn through this plate 2 of the block 5, and say twelve turns taken around this block as above described in connection with the block 4; and then it is threaded through the eye 1 1 of the ring 13 in this block, and passed over the second pulley 7 above this block, and through the last draw plate 2, on to the final or finishin block 6.

hemachine is now ready for work.

In operating the machine, the finishing" block 6 is put into gear with the driving gear of the machine as usual, so that the wire is pulled and wound on 6. If the block 5 is now put into ear withits driving gear of the machine and revolved, and the friction gear of this block adjusted to press the ring 13 onto the upper edge of the block,

.the friction will tend to cause the ring 13 and parts thereon to travel around forward with the block, but the pull of the wire produced bythe pull of the block 6, and the resistance of the drawing plate 2, will cause the ring 13 to slip backward as the required amount of wire is fed off the block, and so feed the wire off the block. Then as regards the block 4,when this block is put into gear with its driving mechanism of the machine, a similar effect and action takes place as described with reference to the-block 5, and its ring 13.

" It may be'assumed that as regards theapparatus described and shown, that the different blocks run at the same speed, and are of the same-size, the result of which is that owing to the lengthening of the wire by drawing action of it, the wire will accumulate somewhat on the block f as compared with the block 5, and on the latter as compared with the finishing block 6; but if desired the speeds and the blocks may be so arranged and regulated that little or no accumulation such as referred to, takes place. j

- What is'cIaimed is: 1. In. wire drawing machinery, a draw- -ing block, fi. means in onnection therewith capable of relative motion with same, and means for securing the feeding ofi' means in adjustable frictional relation to the block, with said feeding off means adapted to be operated upon by the wire in passing from one block to another; substantially as set forth.

2. in wire drawing machinery, a drawing block on which the wire is wound a feeding off means in frictional contact therewith, and capable of relative motion therewith and fitting on the upper edge or face of the block with which frictional contact is made,

and an adjustable friction mechanism connected with said feeding ofi means for governing the degree of friction between the parts; substantially as set forth.

3. In wire drawing machinery, a block on which the wire is wound, a feeding off means in frictional contact therewith, and capable of relative motion therewith, said feeding ofi means consistingof a ring through which the wire is passed, and resting on the upper edge of the block, a central' annular frictional clamp, adjusting means thereon supported centrally on the block, and operating upon parts connected with and carried by the said feeding off .ring; substantially as set forth.

4. Continuous wire drawing machinery of the kind specified in claiming clause 1, wherein the feeding off means has an inclined wire .guide beyond the part thereon through which the wire passes; substantially as set forth.

5. In continuous wire drawing machinery, the combination of a rotary block, a feeding ofi' ring fitting on the upper edge of the same, and in frictional contact there, with, a rin 19, a casting 16 on the block,

arms 20 connecting the ring 13 with the ring 19, a plate 22 fitting on the upper side of the ring 19, and containing a friction device 24 adapted to be pressed on to the ring 19, and adjusting means 25; substantially as set forth.

6. In a continuous wire drawing machine,

a plurality of drawing blocks, a feeding off device for each drawing block, means for securing said device in adjustable frictional relation to the block, through which device the wire passes from each block, a drawing plate or die in connection. with each of said blocks, and an overhead spring supported pulley over each of the blocks, over which the continuous wire is passed, and a final winding on block for the finishing wire; substantially as set forth.

In testimony whereof I have signed my name' to this specification in the presence of two subscribing witnesses.

. MARK HOWARTH. :Witnesses: 1

IRENE AMY FLETCHER,

ARTHUR WHI'ITAKER. 

